#include<stdio.h>
float divide(float a,float b);
void getsum(void)
{

}
float getsum2(float a,float b)
{
    return a+b;
}
int main()
{
    getsum();
    float s1,s2,s3;
      printf("请输入两个相加数字: ");
      scanf("%f%f",&s1,&s2);
      s3=getsum2(s1,s2);
      printf("%.2f+%.2f=%.2f\n",s1,s2,s3);
      
      return 0; 
}
